So I made a short video demonstrating how the plugin could work in game: *Note: I know it's not a 100% accurate representation due to not having a Death to operate the traps
You may notice that it doesn't take much time at all to build up speed, which removes any concerns that not everyone can do it and that people will waste time building speed for 12 hours. If this is instead an issue, there's a cvar that causes speed only to be gained from more curved hops. The same cvar can be used to allow speed to be gained on straighter hops, but that would make it far too easy.
I'd also like to point out that even at full acceleration, it still took 2 jumps to get across the spikes after the bridge. So building up speed to magically skip traps won't happen. Also, if speed is a concern, the cap can simply be set to 400. This allows Death's base speed to be unchanged and still give Runners an extra 100 Hammer units per second on successive hops.
The plugin also makes air strafing easier (this can also be changed), so it makes juking much more accessible.